+++ /dev/null
-/*
- * nhrp.h: next-hop resolution
- *
- * Copyright (c) 2016 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-
-#include <vnet/nhrp/nhrp.h>
-#include <vnet/fib/fib_table.h>
-#include <vnet/adj/adj_midchain.h>
-
-typedef struct nhrp_key_t_
-{
- ip46_address_t nk_peer;
- u32 nk_sw_if_index;
-} nhrp_key_t;
-
-struct nhrp_entry_t_
-{
- nhrp_key_t *ne_key;
- fib_prefix_t ne_nh;
- u32 ne_fib_index;
-};
-
-static uword *nhrp_db;
-static nhrp_entry_t *nhrp_pool;
-static nhrp_vft_t *nhrp_vfts;
-
-#define NHRP_NOTIFY(_ne, _fn) { \
- nhrp_vft_t *_vft; \
- vec_foreach(_vft, nhrp_vfts) { \
- if (_vft->_fn) { \
- _vft->_fn(_ne); \
- } \
- } \
-}
-
-u32
-nhrp_entry_get_sw_if_index (const nhrp_entry_t * ne)
-{
- return (ne->ne_key->nk_sw_if_index);
-}
-
-u32
-nhrp_entry_get_fib_index (const nhrp_entry_t * ne)
-{
- return (ne->ne_fib_index);
-}
-
-const ip46_address_t *
-nhrp_entry_get_peer (const nhrp_entry_t * ne)
-{
- return (&ne->ne_key->nk_peer);
-}
-
-const fib_prefix_t *
-nhrp_entry_get_nh (const nhrp_entry_t * ne)
-{
- return (&ne->ne_nh);
-}
-
-void
-nhrp_entry_adj_stack (const nhrp_entry_t * ne, adj_index_t ai)
-{
- adj_midchain_delegate_stack (ai, ne->ne_fib_index, &ne->ne_nh);
-}
-
-nhrp_entry_t *
-nhrp_entry_get (index_t nei)
-{
- return pool_elt_at_index (nhrp_pool, nei);
-}
-
-nhrp_entry_t *
-nhrp_entry_find (u32 sw_if_index, const ip46_address_t * peer)
-{
- nhrp_key_t nk = {
- .nk_peer = *peer,
- .nk_sw_if_index = sw_if_index,
- };
- uword *p;
-
- p = hash_get_mem (nhrp_db, &nk);
-
- if (NULL != p)
- return nhrp_entry_get (p[0]);
-
- return (NULL);
-}
-
-int
-nhrp_entry_add (u32 sw_if_index,
- const ip46_address_t * peer,
- u32 nh_table_id, const ip46_address_t * nh)
-{
- fib_protocol_t fproto;
- nhrp_entry_t *ne;
- u32 fib_index;
- index_t nei;
-
- fproto = (ip46_address_is_ip4 (nh) ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6);
-
- fib_index = fib_table_find (fproto, nh_table_id);
-
- if (~0 == fib_index)
- {
- return (VNET_API_ERROR_NO_SUCH_FIB);
- }
-
- ne = nhrp_entry_find (sw_if_index, peer);
-
- if (NULL == ne)
- {
- nhrp_key_t nk = {
- .nk_peer = *peer,
- .nk_sw_if_index = sw_if_index,
- };
- nhrp_entry_t *ne;
-
- pool_get_zero (nhrp_pool, ne);
-
- nei = ne - nhrp_pool;
- ne->ne_key = clib_mem_alloc (sizeof (*ne->ne_key));
- clib_memcpy (ne->ne_key, &nk, sizeof (*ne->ne_key));
-
- ip46_address_copy (&ne->ne_nh.fp_addr, nh);
- ne->ne_nh.fp_proto = fproto;
- ne->ne_nh.fp_len = (ne->ne_nh.fp_proto == FIB_PROTOCOL_IP4 ? 32 : 128);
- ne->ne_fib_index = fib_index;
-
- hash_set_mem (nhrp_db, ne->ne_key, nei);
-
- NHRP_NOTIFY (ne, nv_added);
- }
- else
- return (VNET_API_ERROR_ENTRY_ALREADY_EXISTS);
-
- return 0;
-}
-
-int
-nhrp_entry_del (u32 sw_if_index, const ip46_address_t * peer)
-{
- nhrp_entry_t *ne;
-
- ne = nhrp_entry_find (sw_if_index, peer);
-
- if (ne != NULL)
- {
- hash_unset_mem (nhrp_db, ne->ne_key);
-
- NHRP_NOTIFY (ne, nv_deleted);
-
- clib_mem_free (ne->ne_key);
- pool_put (nhrp_pool, ne);
- }
- else
- return (VNET_API_ERROR_ENTRY_ALREADY_EXISTS);
-
- return 0;
-}
-
-u8 *
-format_nhrp_entry (u8 * s, va_list * args)
-{
- index_t nei = va_arg (*args, index_t);
- vnet_main_t *vnm = vnet_get_main ();
- nhrp_entry_t *ne;
-
- ne = nhrp_entry_get (nei);
-
- s = format (s, "[%d] ", nei);
- s = format (s, "%U:", format_vnet_sw_if_index_name,
- vnm, ne->ne_key->nk_sw_if_index);
- s = format (s, " %U", format_ip46_address,
- &ne->ne_key->nk_peer, IP46_TYPE_ANY);
- s = format (s, " via [%d]:%U",
- fib_table_get_table_id (ne->ne_fib_index, ne->ne_nh.fp_proto),
- format_fib_prefix, &ne->ne_nh);
-
- return (s);
-}
-
-void
-nhrp_walk (nhrp_walk_cb_t fn, void *ctx)
-{
- index_t nei;
-
- /* *INDENT-OFF* */
- pool_foreach_index(nei, nhrp_pool,
- ({
- fn(nei, ctx);
- }));
- /* *INDENT-ON* */
-}
-
-void
-nhrp_walk_itf (u32 sw_if_index, nhrp_walk_cb_t fn, void *ctx)
-{
- index_t nei;
-
- /* *INDENT-OFF* */
- pool_foreach_index(nei, nhrp_pool,
- ({
- if (sw_if_index == nhrp_entry_get_sw_if_index(nhrp_entry_get(nei)))
- fn(nei, ctx);
- }));
- /* *INDENT-ON* */
-}
-
-void
-nhrp_register (const nhrp_vft_t * vft)
-{
- vec_add1 (nhrp_vfts, *vft);
-}
-
-static clib_error_t *
-nhrp_init (vlib_main_t * vm)
-{
- nhrp_db = hash_create_mem (0, sizeof (nhrp_key_t), sizeof (u32));
-
- return (NULL);
-}
-
-VLIB_INIT_FUNCTION (nhrp_init);
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
Code Review / vpp.git / blobdiff